
function changeImg(){   
    var imgSrc = $("#imgObj");  
    var src = imgSrc.attr("src");   
    imgSrc.attr("src",chgUrl(src));   
}   
//时间戳   
//为了使每次生成图片不一致，即不让浏览器读缓存，所以需要加上时间戳   
function chgUrl(url){   
    var timestamp = (new Date()).valueOf();   
    url = url.substring(0,17);   
    if((url.indexOf("&")>=0)){   
        url = url + "×tamp=" + timestamp;   
    }else{   
        url = url + "?timestamp=" + timestamp;   
    } 
    return url;   
}   
  
function isRightCode(){   
    var code = $("#veryCode").attr("value");   
    code = "c=" + code;   
    $.ajax({   
        type:"POST",   
        url:"ResultServlet",   
        data:code,   
        success:callback   
    }); 
}   
  
function callback(data){   
    $("#info").html(data); 
	if(data==1){
		nextStep();
		
		
	}
}  